Các câu hỏi tương tự
B=5,76xa+4,24xa
tim gia tri de B nho nhat
2
cho hinh chu nhat co chu vi la 162m . Nguoi ta tang chieu dai moi ben 3m de ra 1 hinh thang can th dien tang 168mvuong
a)hay ve hinh va tinh day lon hinh thang
b)tinh dien tich hinh thang
Bai 1 :Mot thua ruong hinh thangco trung binh cong hai day la 301,5 m . Neu tang day lon them 5,6 m thi dien tich thua ruong tang them 336 m2 a}tinh dien tich thua ruong hinh thang bang don vi dam2b}Cu 300 m2 thu duoc 22,5 tan thoc . Tinh xem tren ca thua ruong thu hoach duoc bao nhieu kilogam thoc ?Bai 2 : Mot hinh thang co dien tich 3780 m2 va chieu cao 45 m . Day be bang 3/5 day lon . Tinh moi day cua hinh thang ?Bai 3:Mot khu ruong hinh thang co chieu cao 50 m . Day lon 145 m ; day be 95 m ....
Đọc tiếp
Bai 1 :Mot thua ruong hinh thangco trung binh cong hai day la 301,5 m . Neu tang day lon them 5,6 m thi dien tich thua ruong tang them 336 m2
a}tinh dien tich thua ruong hinh thang bang don vi dam2
b}Cu 300 m2 thu duoc 22,5 tan thoc . Tinh xem tren ca thua ruong thu hoach duoc bao nhieu kilogam thoc ?
Bai 2 : Mot hinh thang co dien tich 3780 m2 va chieu cao 45 m . Day be bang 3/5 day lon . Tinh moi day cua hinh thang ?
Bai 3:Mot khu ruong hinh thang co chieu cao 50 m . Day lon 145 m ; day be 95 m . Moi met vuong thu hoach duoc 1,74 kg thoc . Hoi nguoi ta thu hoach duoc bao nhieu tan thoc tren thua ruong ay ?
Bai 4: Mot hinh thang co chieu cao 34 dm . Day lon gap doi day be . Dien tich hinh thang bang dien tich 1 hinh chu nhat chieu dai 68 dm ; chieu rong 30 dm . Tinh do daii moi day hinh thang ?
Bai 5 : Mot hinh thang co day lon 60 cm ; day be 38 cm . Neu keo dai day lon them 20 cm va day be 12 cm ve cung mot phia thi dien tich se tang them 512 cm2 . Tinh dien tich hinh thang luc dau ?
Bai 6:Mot hinh thang vuong co dien tich 85 dm2 va hieu 2 day la 3 dm . Neu keo dai day lon them 4 dm nua thi dien tich tang them 20 dm2 . Tinh do dai moi day cua hinh thang vuong do ?
giai han ra nha minh cho moi bai 100 mk nha tong cong se la 600 mk do nha ! ai giai xong ket ban luon voi minh nha ! thanks!
mot hinh thang vuong co day lon 32m chieu cao 18m . nguoi ta mo rong day nho thi thanh hinh chu nhat va dien tich tang them 81m vuong t. tinh dien tich ban dau
bai 1 mot hinh chu nhat co chieu rong bang 3/5 chieu dai . Neu thu hep moi chieu di 8m thi 8m thi dien tich hinh chu nhat giam di 1024m2 . tinh dien tich hinh chu nhat sau khi duoc thu hepbai 2 mot mieng dat hinh chu nhat co chieu dai 64m , chieu rong 34m . nguoi ta giam theo chieu dai va tang chieu rong de mieng dat la hinh vuong biet phan dien tich giam theo chieu dai la 272. tinh phan dien tich tang them theo chieu rongbai 3 Mot hinh chu nhat co chieu ronh bang 3/4 chieu dai. Neu thu hep moi...
Đọc tiếp
bai 1 mot hinh chu nhat co chieu rong bang 3/5 chieu dai . Neu thu hep moi chieu di 8m thi 8m thi dien tich hinh chu nhat giam di 1024m2 . tinh dien tich hinh chu nhat sau khi duoc thu hep
bai 2 mot mieng dat hinh chu nhat co chieu dai 64m , chieu rong 34m . nguoi ta giam theo chieu dai va tang chieu rong de mieng dat la hinh vuong biet phan dien tich giam theo chieu dai la 272. tinh phan dien tich tang them theo chieu rong
bai 3 Mot hinh chu nhat co chieu ronh bang 3/4 chieu dai. Neu thu hep moi chieu 4m thi dien tich giam di 208m2. tih dien tich hinh chu nhat ban dau.
bai 4 Mot hinh chu nhat co chu vi gap 6 lan chieu rong. Neu mo rong chieu dai va chieu rong moi chieu 5m. Thi duoc hinh chu nhat moi co dien tich moi hon dien tich hinh chu nhat cu la 205 m2. Tinh dien tich hinh chu nhat ban dau.
mot hinh thang vuong co day be=3\5 day lon va chieu cao=23cm nguoi ta mo rong hinh thang de duoc HCN thi dien tich cua no tang them 207cm2.hay tinh dien tich hinh thang luc ban dau
1.cho hinh thang vuong co tong 2 day la 30 cm. Neu keo dai day be 5cm thi bang day lon nen dien tich tang len 40cm2. Tinh dien tich hinh thang.
2. cho hinh thang cuong day lon bang chieu cao bang nua day lon . Mo rong hinh chu nhat. Tinh dien tich hinh thang .
3.cho hinh thang co trung binh cong 2 day la 58,5m, neu tang day lon len 4m thi dien tich tang len 21,5 m2. Tim dien tich hinh thang.
Mot hinh thang vuong co day be=3/5 day lon va co chieu cao =23cm .Nguoi ta mo rong hinh thang bang cha keo dai day be cho bang day lon de duoc mot hinh chu nhat, sau khi mo rong dien tich hinh thang tang them 207cm .Tim dien tich hinh thang luc chua mo rong?
mot hinh thang vuong co dien tich la 85dm vuong va hieu hai day la 3dm neu keo dai day lon them 4 dm nua thi dien tich tang them 20 dm vuong tinh do dai moi day cua hinh thang vuong do
mot hinh thang co day be bang 3/5 day lon va co chieu cao bang 23cm.Nguoi ta mo rong hinh thang bang cach keo dai day be cho bang day lon da duoc1 hinh chu nhat ,sau khi mo rong thi dien tich tang them 207cm vuong .Tinh dien tich hinh thang luc chua mo rong?